Technical Data - ABB REL 501-C1 2.5 Technical Reference Manual

5.7
122
Current reversal and weak end infeed logic for
residual overcurrent protection (EFCA)

Technical data

Table 130: EFCA - Current reversal and weak end infeed logic for residual overcurrent
protection
Parameter
Operate voltage for WEI trip, U>
Current reversal pickup timer, tPickUp
Current reversal delay timer, tDelay
Setting range
5-70 % of U1b in steps of 1%
0.000-60.000 s in steps of 1 ms
0.000-60.000 s in steps of 1 ms
Chapter 5
Current
Accuracy
± 5% of set value
± 0.5% ± 10 ms
± 0.5% ± 10 ms